# Keynius Battery Lock vs After School Reminder System

The clearest difference is update cadence: Keynius Battery Lock at monthly against After School Reminder System's every 15 months. Keynius Battery Lock also leads on iOS requirement (12.0 vs 16). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Keynius Battery Lock ships an update monthly, After School Reminder System every 15 months. The most recent releases landed on October 25, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Keynius Battery Lock | After School Reminder System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 15 months |
| Size | 51 MB | 9 MB |
| Requires iOS | **12.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Keynius B.V.](https://appshunter.io/developer/1606427497) | [SMARTVOTE LIMITED](https://appshunter.io/developer/1742716836) |

## What reviewers say

### Keynius Battery Lock

[App page](https://appshunter.io/ios/app/keynius-battery-lock/id6448085886)

**Features:** macOS Compatibility

**In-app purchases:** none


### After School Reminder System

[App page](https://appshunter.io/ios/app/after-school-reminder-system/id6499197116)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Keynius Battery Lock free?

Keynius Battery Lock is free to download, with no in-app purchases.

### Is After School Reminder System free?

After School Reminder System is free to download, with no in-app purchases.

### Do Keynius Battery Lock or After School Reminder System have ads?

Neither Keynius Battery Lock nor After School Reminder System shows ads.

### Which is updated more often, Keynius Battery Lock or After School Reminder System?

Keynius Battery Lock ships an update monthly, and After School Reminder System every 15 months. Most recently, Keynius Battery Lock was updated on October 25, 2026 and After School Reminder System on November 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*